diff --git a/src/libs/core/settings.cpp b/src/libs/core/settings.cpp
index d3f81c53a..24dd69cd8 100644
--- a/src/libs/core/settings.cpp
+++ b/src/libs/core/settings.cpp
@@ -273,6 +273,18 @@ void Settings::migrate(QSettings *settings) const
     const QString version = settings->value(QStringLiteral("version")).toString();
     settings->endGroup();
 
+    //
+    // 0.6.0
+    //
+
+    // Unset content.default_fixed_font_size.
+    // The causing bug was 0.6.1 (#903), but the incorrect setting still comes to haunt us (#1054).
+    if (version == QLatin1String("0.6.0")) {
+        settings->beginGroup(GroupContent);
+        settings->remove(QStringLiteral("default_fixed_font_size"));
+        settings->endGroup();
+    }
+
     //
     // Pre 0.4
     //